Cathay Pacific Flight CX251 Deals & Information (2025/2026)

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Cathay Pacific Flight 251 Route Deals From $624

The cheapest prices found with in the last 7 days for return flights were $790 and $624 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 14 - Sun, May 18
HKG
Hong Kong Intl.
LHR
Heathrow
$790 Roundtrip, found 1 day ago
$790
Roundtrip
found 1 day ago
Select Cathay Pacific flight, departing Wed, May 14 from Hong Kong Intl. to Heathrow, returning Sun, May 18, priced at $790 found 1 day ago

Frequently asked questions

What route does flight number CX251 take?
You’ll be landing into London Airport (LHR-Heathrow) from Hong Kong Airport (HKG-Hong Kong Intl.) if you’re traveling on flight number CX251. You’ll be airborne for 12 hours and 45 minutes during this trip. What’s more, it conveniently travels non-stop.
How often is CX251 on time?
Jetsetters on Cathay Pacific flight number CX251 should be aware that 66% of these planes leave on time. If there’s a delay, the typical wait is approximately 3 minutes. This service has a 2.2-star rating.
What terminal does CX251 fly out of?
Passengers with tickets for flight number CX251 from Hong Kong Intl. Airport (HKG) to Heathrow Airport typically depart from Terminal 1.
What kind of plane is on flight number CX251?
There’s a strong chance you’ll find yourself boarding the Boeing 777-300ER if you’re traveling on flight number CX251. This flight almost always sets off from Hong Kong Intl. Airport (HKG) and lands at Heathrow Airport.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your CX251 flight with Travelocity, please visit our Customer Service Portal.